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September Weather in Corydon, United States

Last updated: June 24, 2025

In Corydon, United States, the average temperature in September hovers around 23°C (74°F), offering a warm atmosphere for visitors. However, be prepared for a range, as temperatures can dip to a cool 8°C (47°F) or soar to a steamy 35°C (95°F). Expect around 90 mm (3.6 in) of precipitation over approximately 7 days, with an average humidity level of 75%, creating a pleasantly tropical feel.

September Temperature in Corydon

In September in Corydon, the average temperature is 23°C (74°F). Maximum temperatures can reach 35°C (95°F), while the minimum can drop as low as 8°C (47°F). This diverse range of temperatures makes it essential for travelers to pack both light clothing for the warm days and warmer layers for cooler evenings.

September Weather in Corydon: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Corydon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Corydon, September typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec364049576977807873614642
Data source: Temperature data for Corydon generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Corydon

In Corydon in September, the total precipitation amount is 90 mm (3.6 in) over a period of 7 days.

September Precipitation Trends in Corydon

The chart displays monthly precipitation patterns in Corydon, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Corydon, September typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec961201341271271178577901198897
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Corydon

In Corydon in September, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

September Average Humidity in Corydon

This chart illustrates the average monthly humidity levels in Corydon, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Corydon is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Corydon

In Corydon in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Corydon.

Maximum UV Index Levels in Corydon for September

The chart shows the monthly maximum UV Index (UVI) for Corydon in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Corydon typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101110109753
Data source: Corydon September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Corydon Compares to Other Months

Weather in Corydon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Corydon, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Corydon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)96 mm (3.8 inches)86%moderate
February Weather4°C (40°F)120 mm (4.7 inches)84%high
March Weather9°C (49°F)134 mm (5.3 inches)84%high
April Weather14°C (57°F)127 mm (5.0 inches)80%very high
May Weather21°C (69°F)127 mm (5.0 inches)82%very high
June Weather25°C (77°F)117 mm (4.6 inches)83%extreme
July Weather27°C (80°F)85 mm (3.4 inches)79%very high
August Weather25°C (78°F)77 mm (3.0 inches)76%very high
September Weather23°C (74°F)90 mm (3.6 inches)75%very high
October Weather16°C (62°F)119 mm (4.7 inches)74%high
November Weather8°C (46°F)88 mm (3.5 inches)85%moderate
December Weather5°C (42°F)97 mm (3.8 inches)88%moderate

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